Dear Stereolabs Team
we have now enhanced the Fusion Setup and are able to wait for Cans and start the fusion more safely.
However now when we have to fusion running we encounter after a while a total crash of the fusion.
We tried then to use the unity experience and the fusion works very good, stable and synch below 1.0, until the problem encounters.
Its unclear if we just imagine it but as soon as we start the Experience where unity is getting the fused data the crash of the fusion starts appearing after the experience runs about 4-5 min.
We are not sure if this is related to the unity Experience that is running, but it kinda looks like ven do we thought unity is only a reciever of the fuded data.
We tried using both setup types of the new SDK
12 & 13 and we have the same Crash on both versions of the SDK on Microsoft Windows 11 Pro, Version 10.0.26100.
The error keeps repeating when it happens:
[2025-11-23 18:47:37 UTC][ZED][ERROR] Skeleton detection inference failed![2025-11-23 18:47:37 UTC][ZED][ERROR] CUDA ERROR in enum sl::ERROR_CODE __cdecl sl:
:grab(struct sl::RuntimeParameters)
in enum sl::ERROR_CODE __cdecl sl::Mat::updateGPUfromCPU(struct CUstream_st *,int) : Err [700]: an illegal memory access was encountered.
in void __cdecl ai::BatchedBuffer::memcpy_d2h(unsigned __int64,struct CUstream_st *) : Err [700]: an illegal memory access was encountered.in void __cdecl ai::BatchedBuffer::memcpy_d2h(unsigned __int64,struct CUstream_st *) : Err [700]: an illegal memory access was encountered.
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2261 code=700(cudaErrorIllegalAddress) “cudaEventRecord(ev_bt, cu_strm)”
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_core\utils\util.cu:482 code=700(cudaErrorIllegalAddress) “cudaCreateTextureObject(tex, &resDesc, &texDesc, NULL)”
in enum sl::ERROR_CODE __cdecl sl::Mat::updateCPUfromGPU(struct CUstream_st *) : Err [700]: an illegal memory access was encountered.
in enum sl::ERROR_CODE __cdecl sl::Mat::updateCPUfromGPU(struct CUstream_st *) : Err [700]: an illegal memory access was encountered.
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2283 code=700(cudaErrorIllegalAddress) “cudaStreamWaitEvent(cu_strm, ev_depth, 0)”
in enum sl::ERROR_CODE __cdecl sl::Mat::updateCPUfromGPU(struct CUstream_st *) : Err [700]: an illegal memory access was encountered.
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2315 code=700(cudaErrorIllegalAddress) “cudaStreamWaitEvent(cu_strm, ev_bt, 0)”
in enum sl::ERROR_CODE __cdecl sl::Mat::copyTo(class sl::Mat &,enum sl::COPY_TYPE,struct CUstream_st *) const : Err [700]: an illegal memory access was encountered.
in enum sl::ERROR_CODE __cdecl sl::Mat::copyTo(class sl::Mat &,enum sl::COPY_TYPE,struct CUstream_st *) const : Err [700]: an illegal memory access was encountered.
in enum sl::ERROR_CODE __cdecl sl::Mat::copyTo(class sl::Mat &,enum sl::COPY_TYPE,struct CUstream_st *) const : Err [700]: an illegal memory access was encountered.
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2157 code=700(cudaErrorIllegalAddress) “cudaEventRecord(ev_image, sdk_stream)”
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2245 code=700(cudaErrorIllegalAddress) “cudaStreamWaitEvent(cu_strm, ev_image, 0)”
in enum sl::ERROR_CODE __cdecl sl::Mat::copyTo(class sl::Mat &,enum sl::COPY_TYPE,struct CUstream_st *) const : Err [700]: an illegal memory access was encountered.
CUDA error at C:\builds\sl\ZEDKit\lib\src\sl_zed\DetectionHandler.cpp:2187 code=700(cudaErrorIllegalAddress) “cudaEventRecord(ev_depth, sdk_stream)”
[2025-11-23 18:47:37 UTC][ZED][WARNING] IExecutionContext::enqueueV3: Error Code 1: Cuda Runtime (In genericReformat::copyPackedRunKernel at C:_src\runtime\gpu\legacy\genericReformat.cuh:1501)[2025-11-23 18:47:37 UTC][ZED][WARNING] [Grab] CUDA error returned: an illegal memory access was encountered ( 700 )
Our Rig is a Blackwell GPU with i9:
NVIDIA Systeminformationen-Bericht erstellt am: 11/23/2025 19:31:32
Version der NVIDIA App: 11.0.5.420
Betriebssystem: Microsoft Windows 11 Pro, Version 10.0.26100
DirectX-Laufzeitversion: DirectX 12
Treiber: Game Ready Treiber - 581.80 - Tue Nov 4, 2025
CPU: Intel(R) Core™ i9-14900KF
RAM: 32.0 GB
Speicher: SSD - 1.8 TBGrafikkarte
GPU: NVIDIA GeForce RTX 5080
Direct3D-Funktionsebene: 12_1
CUDA-Kerne: 10752
Grafik-Taktfrequenz: 2775 MHz
Resizable BAR: Ja
Speicher-Datenrate: 30.00 Gbps
Speicherschnittstelle: 256-Bit
Speicherbandbreite: 960.064 GB/s
Gesamter verfügbarer Grafikspeicher: 32581 MB
System-Videospeicher: Nicht anwendbar
Gemeinsam genutzter Systemspeicher: 16278 MB
Dedizierter Videospeicher: 16303 MB GDDR7
Video-BIOS-Version: 98.03.3b.00.a8
Geräte-ID: 10DE 2C02 1435196E
Teilenummer: G147 0045
IRQ: Nicht benutzt
Bus: PCI Express x16Anzeige (1): Samsung LS27A80
Auflösung: 4k x 2k, 2560 x 1600 (empfohlen)
Bildwiederholfrequenz: 60 Hz
Desktop-Farbtiefe: Maximum (32 Bit)
HDCP: Unterstützt
i cant share our C++ public, but if possible we like to show you the code. Maybe we do something wrong… 
Kindest Regards
Pascal